Code 46 after 870 to 165 swap
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Joined: Dec 2013
Posts: 59
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From: Grants Pass, OR
Code 46 after 870 to 165 swap
Updated my 1985 870 ECU to a 165, finally got to crank it over and no love. The car cranks, I've got spark but no injector pulse and the ECU is throwing code 46.
Since search wouldn't let me use the term "46" it's a little difficult to find answers but I wanted to confirm what I'm suspecting before doing more work.
Anyway, I found the VATS signal simulator on vatssucks.com. Would that resolve the code 46 or am I looking in the wrong place?
Obviously I can't throw a resistor under the dash since my 85 didn't have the pellets in the keys anyway.
I've got the 1985 service manual but no code 46 in there.
I'm taking the car to a tuner on Monday and he'll disable VATS but he's about 5 hours away and I need to get this thing to fire to determine if there are any other issues.
Since search wouldn't let me use the term "46" it's a little difficult to find answers but I wanted to confirm what I'm suspecting before doing more work.
Anyway, I found the VATS signal simulator on vatssucks.com. Would that resolve the code 46 or am I looking in the wrong place?
Obviously I can't throw a resistor under the dash since my 85 didn't have the pellets in the keys anyway.
I've got the 1985 service manual but no code 46 in there.
I'm taking the car to a tuner on Monday and he'll disable VATS but he's about 5 hours away and I need to get this thing to fire to determine if there are any other issues.
Drifting
Joined: May 2013
Posts: 1,736
Likes: 31
From: Reno Nevada
Updated my 1985 870 ECU to a 165, finally got to crank it over and no love. The car cranks, I've got spark but no injector pulse and the ECU is throwing code 46.
Since search wouldn't let me use the term "46" it's a little difficult to find answers but I wanted to confirm what I'm suspecting before doing more work.
Anyway, I found the VATS signal simulator on vatssucks.com. Would that resolve the code 46 or am I looking in the wrong place?
Obviously I can't throw a resistor under the dash since my 85 didn't have the pellets in the keys anyway.
I've got the 1985 service manual but no code 46 in there.
I'm taking the car to a tuner on Monday and he'll disable VATS but he's about 5 hours away and I need to get this thing to fire to determine if there are any other issues.
Since search wouldn't let me use the term "46" it's a little difficult to find answers but I wanted to confirm what I'm suspecting before doing more work.
Anyway, I found the VATS signal simulator on vatssucks.com. Would that resolve the code 46 or am I looking in the wrong place?
Obviously I can't throw a resistor under the dash since my 85 didn't have the pellets in the keys anyway.
I've got the 1985 service manual but no code 46 in there.
I'm taking the car to a tuner on Monday and he'll disable VATS but he's about 5 hours away and I need to get this thing to fire to determine if there are any other issues.
Race Director
Joined: Apr 2002
Posts: 10,036
Likes: 346
From: Anaheim CA
Error code 46 is no VATS signal (VATS started in 1986). It will disable the injectors.
The resistor fools the VATS module. Since you don't have a VATS module you don't need to go there.
To get it to run you'll need to simulate the 30 Hz signal from the VATS module. Follow the info on the VATS Sucks web site to find a 30 Hz module. If you're electronically inclined you can make one yourself with a NE555 timer IC (that's what's inside the simulator modules).
The resistor fools the VATS module. Since you don't have a VATS module you don't need to go there.
To get it to run you'll need to simulate the 30 Hz signal from the VATS module. Follow the info on the VATS Sucks web site to find a 30 Hz module. If you're electronically inclined you can make one yourself with a NE555 timer IC (that's what's inside the simulator modules).
